Inking mechanism for printing-presses.



W. M. EVENSEN.

INKING M ECHANISM FOR PRINTING PRESSES. APPLlCATlON mu) MAY ls. Isle.

1,7,9@%, Patented'Nov. 27, 1917 2 SHiETS-SHEET 1v APPLICATlON FILED MAY16. I916.

Patanted Nov 2?, 1917.

2 SHEETS-SHEET 2.

mmgmg Ill/VE/JTOR learnt t me,

WILLIAM EVENSEN, or CHICAGO, ILLINOIS, Assie von TQ qoss estuar ne Prases COMPA Y, A conronarion or rttiluors.

Specification of Letters Patent.

Patented Nev. 27, f917 App ic t e May 1316- Serial N 9 37 To all whom itmay concern:

Be it known that I, lVILLIAM M. EVEN- SEN, a citizen of the UnitedStates, residing at Chicago, coimty of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Inking Mechanisms forPrinting-Presses, of which the following is a specification.

The invention relates to inking mechanisms for printing presses, andmore par ticularly to inking mechanisms for rotatory printing presses,

Objects of the invention will be set forth hereinafter in part, and inpart will be obvious herefrom, said objectsbeing attained through themeans and combinations pointed out in the accompanying claims.

The invention consists in the novel parts, construct-ions, arrangements,combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and forming a part hereof,illustrate one embodiment of the invention, the same serving inconnection with the description herein to explain the principles of theinvention.

Of the drawings:

Figure 1 is a fragmentary elevation of a portion of a printing press,with parts omitted, said figure showing a mechanism constructed inaccordance with the principles of the invention;

Fig. 2 is a fragmentary elevation of a portion of the mechanism at theright-hand part of Fig. 1;

Fig. 3 is a detail edge view, on an enlarged scale, of the cam foroperating the vibrating feed roller;

Fig. 4c is a face View, also on an enlarged scale of the cam, looking atFig. 3 from the left; i

Fig. 5 is a face View of the cam hub, likewise on an enlarged scale Fig.6 is a face view of the cam;

Fig. 7 is an edge view of the cam looking at Fig. 6 from the right; and,

Fig. 8 is a horizontal central the line A-B of Fig. 4.

In fast rotary perfecting presses, and like machines, the production ofa satisfactory printed product can be secured only through an efficie tpera ion f the nk ng mechan sm- .The ope t on of th ink ng mecha rise; iequired to be very rapid, but at the section on same time it must bevery accurate and unie o m in Order v Pr duce an a ceptabl or s t f ry pu t Ditfi l y as b e experienced in previous mechanisms with the.operation of the swinging ink feeding rollerwhich oscillates, betweenthe ink fountain roller and the ink drum, taking successive smallquantitiesofink from the fountain roller and supplying them to the drum.This roller is usually a composition roller, and varies in size fromtime to time, a roller shrinking and becoming of less diameter with age,and later such aroller is replaced by a new roller-of larger size anddiameter than the old one. The present invention provides mechanismwhereby, with such variations in the size of the swinging ink feedingroller in View, and also having in view the prevention of destructiveslaminin tog th Of e rol e e l as o he 0ba uniform coaction or degree ofcontact or pressure between the oscillating ink feeding roller and boththe fountain roll and the ink drum are maintained, and in certainaspects of the invention, in connecn i h mech n sm he i th o illa ns infe ding 1 1 i a t at nd $91 trolled by therim or periphery of anactuating cam at all points in its travel,

Referring by way of example to the accompanying drawings, an inkfountain is represented by numeral 1, and the fountain rollertherewithin by 2, The ink drum 3 cooperates with the usual distributingor vibrating rollers (not shown), and these distributing rollers in turncooperate with and 1111; t o m ll r h c latte n the forms upon thecylinders in a wellrknown manner.

The ink feeding roller 4 swings to and fro between the fountain roller 2and the ink drum 3, co veying periodically a small quantity of ink fromthe fountain roll to the ink drum, the ink being carried forward fromthe latter to the form in the manner and by the mechanism brieflyindica-teigl above. The fountain roll 2 is intermittently rotated for ashort distance from time to time in the usual manner. The roller .4 is

s ppers d y ts nint e 5 i wi eli 1 cessles in .the upper end of arms .6,roller M f being held in position ,by latches lat hes lze mo nted o thearm a and c e' s t p ntles 5 of t 1 91- t T18 mn mwyng arm fi are locted Wi i-fi th? press frame 8, and are fixed to a rock shaft 9, whichshaft is journaled transversely in the press frame (only one of the arms6 and one end of the roller 4 being shown in the drawings).

The actuating means for the ink feeding roller 3 comprises meansincluded in the connections between the roller and its cam for varyingthe angular relation in either direction of the roller with respect tothe cam, thereby regulating and changing as desired the length of travelof the ink-feeding roller in either direction. In the embodied form ofsuch means, the arms 6 are fixed to the shaft 9 in a suitable mannerpreferably adjustably by means of set or clamping screws 10. The end ofthe rock shaft 9 extends outside of the press frame 8, and from suchoutside end of the shaft 9 extends a lever arm 11, which is fixed to theshaft in a suitable manner, as by a key or feather 12. The outer end oflever 11 has formed therein an elongated slot 13, and at ei her side ofthe slot, the lever is provided with internally threaded bosses orextensions 14 and 15. Into these bosses respectively, are threadedscrews 16 and 1 which screws are provided respectively with locking nuts18 and 19, the interior ends of the screws 16 and 17 projecting into theslot 13. Projecting into the aperture 13 is a cylindrical pin 20, theinner end of the screws 16 and 17 engaging with the pin 20 on oppositesides thereof. By turning the screws 16 and 17 the travel of theinkfeeding roll may be lengthened or'shortened toward either thefountain roll or the ink drum, the effective length of the rod beingchanged by the setting of the screws to effect this result.

The pin 20 is attached to the upper end of a rod 21, said rod at itsupper end having an enlarged circular head 22 with a face bearingagainst a corresponding face upon the head or end of the lever arm 11.The rod 21, at its lower end, is formed as a yoke 23, straddlin a shaft24, which shaft is carried in suitable bearings'25 upon the machineframe. The yoke 23 carries a cam roll 26, said cam roll engaging the rimor periphery of a cam 27 which cam is fixed to and rotates with theshaft 24. Upon the opposite side of the yoke 23 is a collar 28,encircling the shaft 24, and holding the yoke in position with the camroll 26 engaging thecam 27. The shaft 25 is driven in a suitable manner,as by beveled gears 29, from the shaft 30. It will be seen that byturning the screws 16 and 17, the angular relation in either directionof the arm 11 to the rod 21 and to the cam 27 may be determined andregulated as desired.

In accordance with certain features ofthe invention, means are providedfor varying the. diametral relation of the cam 27 and its circling theshaft anc shaft.

shaft 24, and also for positioning the cam angularly upon its shaft. Bythese various means, the extent and location'of the path of travel ofthe oscillating ink-feeding roller may be varied and determined, theamount or degree of contact and pressure between the ink feeding rollerand the ink fountain roller and between the ink feeding roller and theink drum may be nicely and accurately maintained and regulated despitevariations in the size of the ink feeding roller, and at the same timethe ink feeding rolleris under control throughout its entire extent thesupplying roller against the fountain roller or the ink drum. 7

In the embodied form of the cam, there is provided a hub fixed to androtating with the shaft and a cam )roper, referably enprovid ing abearing or contacting surface all the way around its periphery, therebykeeping the oscillating inkfeeding rollerunder control at all times, thecam being tionable relatively to the hub and to its In such embodiedform, the hub 35 has a central opening 36 through which passes the shaft24. The'hub is held in fixed position to rotate with its shaft, and isangularly adjustable about itsshaft by suitable means such as clampingor binding screws threading into the radially arranged apertures 37 and38. Upon the face or side of the hub 35 there is provided a dovetail orundercut part, arranged centrally across the face of the hub. Asembodied, the face 39 is undercut as shown at 40 and 41 providingtherebetween a flat bearing face 42 for the-inner face of the cam.

r The cam proper has its rim or periphery 43 as the contactingoroperating surface for the cam roll. Upon its inner face 44 is aprojecting portion 45 extending across the face of the cam symmetricallywith respect to the center thereof, said projecting part 45 having itsside edges 46 and 47 undercut or beveled so as to fit snugly and to beheld by and to slide within the undercut edges 40 and 41 of the hub, asshown best in Fig. 3. The cam has its internal aperture 48 considerablylarger than the internal aperture 36. of the hub and likewiseconsiderably larger than the diameterof the shaft 24. Thus the cam mayslide along the face of the hub, changing the diametral relationthereof, and the relation of the centers of the cam and its shaft withrespect toeach other. 0

Means are provided by the invention for accurately and nicely varyingand determining the relation of the cam-to its shaft, and in theembodied form thereof, a pin 53 is fixed in the cam 27 and projects fromthe inner face thereof into an opening 54, of larger size, formed in 'orpassing through diametrally variable or posiof travel, therebypreventing slamming of V left in Fig. 8.

taeaeaa the hub 35. The pin 53-. in. its projecting portion, has formedtherethrough an internally threaded opening 55. In this internallythreaded opening 55 engages a screw 56, which screw hasa head 57 within,a radially disposed cylindrical opening 58 in the hub 35. The screw 56is held in station ary position longitudinally with respect to the hub35, while being free to rotate, and as shown pins 60 and 61 are drivenrespectively through holes passing through the hub at either side of thecylindrical opem ing 58, said pins projecting for substantially halftheir diameters into a rounded annular groove 63 formed in the head 57of the screw 56. The screw is turned in a suitable manner, andpreferablyby an angularly shaped recess 6% formed in the top of thehead,

When. th screw 56 is turned, it is free to rotate with respect to thehub 35, but is longitudinally fixed relatively to the hub. As the screw56 is rotated, by reason of its threaded engagement with the pin 53, the

cam proper is moved in the guideway on the face of the hub either to theright or the The central opening of the cam being larger than the shaft24,, and the opening 5% in the hub being larger than the pin 53, the camcan slide upon the hub and be accurately positioned by the screw, whilethe cam is held to the hub by the dovetail connection t will thus beseen that the cam has a very wide range of regulation or adjustabilitywith the utmost degree of exactness and nicety, and at the same time theparts are held accurately and fixedly in position, and that the throw ofthe cam may be varied as desired, the cam roll on the rod at all timesbeing permitted to. follow the periphery of the cam and thus keep themovement of the oscillating ink-feeding roll under absolute control, andnicely regulating and determining its travel toward and its contact withboth the fountain roll and the ink drum.

There is thus provided by the invention a cam actuated and governedmechanism for continuously controlling the movement of the fountain feedroller lever on this type of press, and at the same time giving avariable throw or length of travel to the feed roller, so that the throwcan be in creased or decreased as the composition roller varies indiameter, thereby maintaining at all times the desired impingementagainst the fountain roller, and also the desired impingement againstthe ink drum.

By the screw regulation at the end of rod 21 the location of the ends ofthe path of travel of the ink feeding roller 3 may be changed anddetermined, and thereby the degree of contact of the roller 3 with boththe ink drum and the fountain roll is controlled despite variations inthe size of the ink feeding roller. By the positioning or adjustment ofthe cam upon its shaft the total extent of the path of travel of the inkfeeding roller may be varied, regulated and determined, therebycompensating for variations in the size of the ink feeding roller. Thecam roller is designed to follow the cam at all times to continuouslycontrol the ink feeding roller and to prevent slamming and loose motionthereof, and by changing the diametral relation of the cam and its shaftthe low and high parts of the cam are varied together to maintain thisrelation while at the same time scouring proper regulation of thelocation and extent of the path of travel or oscillation of the inkfeeding roller.

From all the foregoing it will be understood that a mechanism has beensupplied realizing the objects and advantages hcrcin set forth, togetherwith other objects and advantages. It will be further understood thatchanges may be made from the precise construction shown and described,without departing from the principles of the invention and withoutsacrificing its chief advantages.

What I claim as my invention and desire to secure by Letters Patentis 1. An inking mechanism for printing presses including in combinationan ink fountain roller, an ink drum, a feed roller swingingtherebetween, and means for swinging said roller, including supportingarms therefor, a shaft, a cam encircling said shaft and means forvarying the position of the centers of the cam and of the shaft.

2. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a cam, an arm designed to continuously follow the cam, a shaft on whichthe cam is mounted, and means for varying the position of the centers ofthe cam and .of the shaft.

3. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a cam, an arm designed to continuously follow the periphery of the cam,a. shaft on which the cam is mounted, and means for varying the positionof the centers of the cam and of the shaft.

4:. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a shaft, a hub fixed to rotate with said shaft, a cam carried by saidhub,

and means for diametrally varying the position of said cam and hub.

5. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a shaft, a hub fixed to rotate with said shaft, a peripheral cam mountedon said hub and encircling said shaft, means for diametrally varying theposition of said cam and hub, and an arm designed to follow said cam.

6. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a shaft, a hub fixed to rotate with said shaft, a peripheral cam mountedon said hub and encircling said shaft, means for diametrally varying theposition of said cam and hub, and an arm designed to continuously followsaid cam.

7. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a shaft, a hub upon the shaft, a cam carried by and movable upon thehub, and means for moving the cam to position upon the hub and holdingthe cam in position.

8. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a shaft, a cam upon the shaft and means for varying the diametricalrelation of the cam and shaft.

9. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting Copies of thispatent may be obtained for and means for movin the cam diametrallyrelatively to the shaft and for holding it in the desired position.

10. An inking mechanism for printing shaft.

11. An inking mechanism for printing presses lncluding 1n comblnatlon anink fountain roller, an ink drum, a feed roller swinging therebetween,and means for swinging said roller, including supporting arms therefor,a rod swinging said arms, means for regulating the angular relation ofthe rod to the arms, and a cam reciprocating said rod, a shaft forthecam, and means for varying the diametral relation of said cam and itsshaft.

12. An inking mechanism for printing presses including in combination anink fountain roller, an ink drum, a feed roller swinging therebetween,means for swinging said roller, including supporting arms therefor, arod swinging said arms, means for regulating the angular relation of therod to the arms including devices for lengthening or shortening theeffective length of said rod, and a peripheral cam longitudinallyreciprocating said rod, a shaft for the cam, and means for varying thediametral relation of said cam. and its shaft.

In testimony whereof, I have signed my name to, this specification, inthe presence of two subscribing witnesses.

WILLIAM M. EVENSEN.

Witnesses:

W. G. FERGUSON, E. O. MEYER. V

Washington, D. 0,.

arms therefor, a shaft, a cam upon the shaft

